Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           "minerals constituting rocks"
             "Alumina-Silicates containing water"
               zeolite Cronstedt, 1756
                 heulandite (Brooke, 1822) D.S. Coombs et al., 1997
                   1 heulandite-Ba
                   2 heulandite-Caᵀ Coombs et al., 1997
                   3 heulandite-Sr Coombs et al., 1997
                   4 heulandite-Na Coombs et al., 1997
                   5 heulandite-K Coombs et al., 1997